Category
Crypto & Security (11 tools)
Software engineers, system administrators, and security specialists regularly need to inspect tokens, generate cryptographic keys, and verify secure hashes during development. This collection of 11 crypto and security utilities covers essential tasks such as symmetric encryption, token inspection, and key creation. If you are debugging API authentication, use the JWT decoder to verify payload claims. When storing credentials or validating data integrity, choose between the Bcrypt hash generator, HMAC calculator, or AES cipher. To select the appropriate utility, identify your exact layer of security, whether that means generating asymmetric RSA key pairs, evaluating password complexity, or encoding cryptographic signatures.
Tools in this category
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Bcrypt Hash Generator
Generate salted bcrypt password hashes with configurable cost rounds for development and testing.
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Caesar Cipher
Encode and decode text with a classic Caesar shift cipher, choosing custom shifts and direction.
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AES Cipher
Encrypt and decrypt text with AES-256-GCM using a key derived from your password.
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Hash Generator
Generate cryptographic hash digests including MD5, SHA-1, SHA-256, SHA-512, SHA-3, and BLAKE2 in hexadecimal format from any text.
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HMAC Generator
Generate keyed-hash message authentication codes (HMAC) using SHA-256 or SHA-512 algorithms online.
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JWT Decoder
Decode and inspect three-part JSON Web Tokens with optional secret-based signature verification.
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JWT Generator
Generate signed JSON Web Tokens (JWT) using HMAC-SHA256 signing with custom or default JSON payloads.
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OTP Generator
Generate time-based TOTP or counter-based HOTP verification codes from a Base32 secret using HMAC-SHA1.
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Password Strength Checker
Check password strength, calculate entropy bits, and estimate crack time based on length and character sets.
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RSA Key Generator
Generate standard RSA public and private key pairs as PEM text with key sizes of 2048, 3072, or 4096 bits.
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Vigenère Cipher
Encrypt and decrypt text online using the polyalphabetic Vigenère cipher with a custom keyword.
FAQ
What cryptographic operations can I perform here?
You can decode JSON Web Tokens, generate secure RSA key pairs, create Bcrypt and HMAC hashes, encrypt text using AES ciphers, and test password strength.
Can I test the security tools without an account?
Public tools can be tried without an account; current guest and account limits are shown by the site.
What happens to the sensitive strings and keys I enter?
Inputs are used solely to run the selected tool and generate your requested output. Depending on the algorithm, processing occurs in your browser or through backend services.
Which utility should I use to inspect an authorization header?
Use the JWT Decoder to paste your token string and immediately inspect the header parameters, claims payload, and signature format.